Portable concrete-mold.



D. W. SMITH.

PORTABLE GONOBETE MOLD. nruonmn FILED M230, 1901.

902,922. Patented Nov. 3, 1908. a SHEETS-SHEET 1.

ml 560 70 f 4r 3/ 1' I cm, IIIIIINGION. n. c

D. W. SMITH.

PORTABLE GONUBETE MOLD.

APPLIUATION FILED SEP'LSO, 1907.

902,922. Patented Nov. 3, 1908.

8 SHEETS-SHEET Z.

1n: "can: PEflIRS no wAsnnvamn, n, c.

D. W. SMITH. PORTABLE OONUBETE MOLD. Arruonmn nun 51m. 30, 1901.

Patented Nov.3, 1908.

8 SHEETS-SHEET 3.

T, Y a W Z r w% a z m z w Qm fl a Q 0 l 1 I gain wave: a

"I: uomzrs PETIRS ca wnsmrmron. n. c

DAVID W. SMITH, OF FORT WORTH, TEXAS.

PORTABLE CONCRETE-MOLD.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Application flled September 30, 1907. Serial No. 395,320.

To all whom it may concern:

Be it known that I, DAVID W. SMITH, a citizen of the United States, residing at Fort Worth, Texas, have invented certain new and useful Improvements in Portable Concrete-Molds, of which the following is a specification.

My invention relates to machines for makin concrete blocks or artificial stone, and the object is to provide a mold which may be suspended on a truck so that the mold with its contents may be carried to the desired loca tion with ease and facility by one person. have also rovided certain convenient means for assem ling a mold and for removing the mold from the block when formed.

Other objects and advantages will be fully explained in the following descri tion and the invention will be more particuFarly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application and specification.

Figure 1 is a front elevation of the molds mounted on the truck. Fig. 2 is a side elevation of the same. Fig. 3 is a perilpective view of a weight which is suspends about the core. Fig. 4 is a lan view of the frame pieces which elevate t e core and which also actuate the levers which release the vertical mold pieces. Fig. 5 is a plan view of the machine. Fig. 6 1s a detail view of one of the ide posts for the frame shown in Fig. 4.

ig. 7 is a plan view of a variation in the molds. Fig. 8 is a cross-section of the side mold pieces. Fig. 9 is a side elevation of the machme shown in Fig. 7, the variation shown being for the purpose of making corner pieces or L blocks. Fig. 10 is a broken perspective view of devices for moving dry blocks. Fig. 11 illustrates devices for use in making larger blocks.

Similar characters of reference are used to indicate the same parts throughout the several views.

The molds herein illustrated are shown mounted on a truck which has wheels 1 and 2 and frame pieces 3 and 4 which terminate with handles 13. Frame pieces 3 and 4 are reinforced by a cross-piece 6 which has arms 7 and 8 on which the molds are pivotally mounted, the arms 7 and 8 being attached rigidly to the arms 3 and 4 respectively. A cross piece 9 is attached to frame pieces 3 and 4 rigidly and standards 10' are formed integral with cross-brace 9. The frame pieces 3 and 4 have horizontal flanges 11 to which the axle 12 is attached. The frame pieces 3 and 4 terminate with handles 13. A releasing or disassembling frame is pivotally mounted on the standards 10. This frame is a rectangular frame having the side pieces 14 and end pieces 15 with projecting arms 16 which may e extensions of the side-pieces 14. The truck and the frame for the truck and the disassembling frame are the same in Figs. 1, 2, and 5 as the corresponding elements in the variations shown in Figs. 7 and 9 except that in Figs. 1, 2, and 5 the frame pieces 14 are hun on the outside of standards 10 while in gs. 7 and 9, the frame pieces 14 are hung on the inside of the standards 10. There is no difference in operation or mechanical advantage. A cross-bar 17 is loosely connected to the arms 16 by means of link bars 18. In the form shown in Figs. 1, 2, and 5, the bar 17 has a flange 19 which projects forward of the guide standards 20 and a flange 19 rojecting backwardly of the guide standar s 20.

In Figs. 7 and 9 both flanges 19 roject forward of the guides 20. The link ars 18 are pivotally connected with the arms 16 and with the flanges 19. The standards 20 are mounted on the mold frame and connected rigidly with the mold frame. These standards are pivotall connected with the arms 7 and 8 by ivot olts 21 which are provided with tubu ar bearings 22 which are mounted in the standards 20. The mold frame is thus pivotally suspended on the arms 7 and 8 which are carried by the truck. The mold has a frame composed of the end pieces 23 and side pieces 24 which are rigidly connected together and the standards 20 are ri idly connected with the end pieces 23. Tie molds have side boards 25 and end boards or walls 26, the side boards or walls 25 being hinged to the side frame pieces 24 and the end boards or walls 26 being hinged to the end frame pieces 23. The side walls 25 are held normally raised out of o erative position by means of springs 27 which are bolted to the frame pieces 24 and engage loops 28 which are attached to thewalls 25. Similar springs 29 are attached to the end frame pieces 23 to hold the end walls 26 in the same manner. The walls of the mold are locked in o erative position in the following manner. okes 30 are provided and pivotally connected to link bars 31. The link bars 31 are pivotally connected with the ends of the cross bars 17, the

cross bar 17 projecting through the standards j 20. The end Walls 26 have cars 32 turned to project on the side of the side Walls 25. The yokes 30 are ivotally connected with the ears 32 and t e yokes terminate with the hooks 33 which engage studs 34 on the side walls 25.

The mold is assembled for operation by pressing the side Walls down into position, then pressing the end Walls into position with the ears 32 extending on the side of the side Walls, and then causing the hooks 33 to en age the studs 34. In doing this bar 17 has Eeen brought to its lowest osition. The bar 17 carries a core 35 which is suspended thereon. When the walls are in operative position and looked as above described, the core 35 is at its lowest osition and rejects through the pallet. T e frame whicli carries the core and the link bars 31 is pivotall mounted on the standards 10 by means 0 link bars 36 which are pivotally connected with the standards 10 and With the sides 14. It is necessary to have a swinging motion of the assembling frame as well as a fulcrum or pivot, because the cross bar 17 must have a vertical motion to raise the core vertically and to raise the link bars 30 vertically. When the block has been formed, a sudden stroke on the front piece 15 of the disassembling frame will cause the link bars 30 to release the hooks 33 and at the same time the bar 17 will draw the core out of the block. The springs 27 and 29 will swin the walls of the mold from the block imme iately on the release of the hooks 33. A Weight 37 is rovided for pressing on the surface of the b ock about the core for preventin th material from clinging to the core as t e core is withdrawn from the block. The Wei ht 37 is hung on the bar 17 by a bale 38 whic engages the bar 17 loosely. When the core is down in the mold, the bale 38 is entirely above the mold. The mold has no to or coverotherthanthewei ht37. The core is projected throu h the a let into the ground to hold the mo d in ace;

The frame pieces 24 may e extended to form handles for use in carrying the mold when not suspended on the truck.

In 0 eration the mold is assembled as above escribedf A pallet 39 may be provided and supported on under projectin fla cs 40 of the end walls 26. The materia is p aced in the mold with the weight 37 on top of the material. A person can then move the mold with the block therein to any place desired by pressing down on the handles 13 and ushin the truck. A sudden stroke on the fiont o the disassembling frame will release the mold and draw the core therefrom. A weight may be placed in a box 41 to aid'the operator in balancin the truck.

The variation in the mold s own in Fi s. 7 and 9 is operated in the same manner y the truck and its attachments as the mold shown in the other figures. An angular wall 42 is hinged to the mold frame. The mold frame has an upwardly projecting standard 43 to which the wall is hinged. This construction is necessary in order to make the wall 42 swing into position easily, the wall havin a portion thereof projecting upwardly as big as the standard 43. It is necessary to place the yoke 30 on the forward end of the mold. The cross bar 17 is provided with an arm 44 and a guide standard 45 is provided for the arm 44. The variation is provided with similar cores to the core 35 of the mold previously described. Three weights 46, similar to weights 37 are hung about the cores, two cores being carried by the bar 17 and one carried by the arm 44. As there will be more weight at the forward end of the L- block a counter-balancing weight 47 is neces sary to balance the mold and make the same swing vertically. The end of the bar 17 has an extension 48 bent backward in the same manner as extension 19 but further backward and the weight 47 is mounted on the exten sion 48.

The mold is provided with rests 49 which are screwed up through the frame pieces of the mold. The rests or legs can be screwed more or less through the frame pieces to sup* port the mold at different heights.

It will be seen that by means of the devices herein described and shown in the drawings that blocks of various sizes and configurations may be made.

For the pur ose of moving dry blocks I detach the mo] s and suspend hangers 50 on the arms 7 and 8. The horizontal portion of the hangers may be placed under each end of a block and the block can then be carried to the desired location by the truck. See broken view, Fig. 10. For the purpose of making larger blocks, larger molds are made and rovision is made for suspending larger mold; on the truck. This is done by attaching extensions 51 to the arms 7 and 8, as illustrated in Fig. 11. The guide standards 20 of larger molds can be suspended on the extensions of 7 and 8.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is,

1. The combination of a mold having a core and a truck for transporting said mold and a disassembling frame mounted on said truck and rovided with means for disassembling said mold and means for extracting the core therefrom.

2. The combination of a mold provided with a core and a truck for transporting'the mold and a disassembling frame ivotally mounted on said truck and provi ed with means for disassembling said mold, means for drawing said core therefrom, and means for preventin said core from mutilating the look as t e core is withdrawn.

3. The combination. of a mold provided with a core and a truck for transporting the mold and a disassembling frame pivotally mounted on said truck and provided with a lifting bar, a hanger suspending said core on said bar, links pivotally connected with said bar, and. yokes pivotally connected with said. links and serving to lock said mold in assembled position.

"4. The combination of a mold provided with a core and guide standards and a truck for transporting said. mold provided with. a disassembling frame pivotally mounted on said truck, a lifting bar carried by said frame, a hanger suspended on said bar and carrying said core, a weight cooperating with hanger, links pivotally connected with said lifting bar, and yokes pivotally connected with said links and serving to lock said mold in assembled position.

5. The combination of a mold consisting of a frame and wall forming members hinged thereto and provided with a core and a truck for transporting said mold rovided witha disassembling frame pivotaly mounted on said. truck, a. lifting bar carried by said frame a hanger suspended on said bar and carrying said eore, links pivotally connected with said lifting bar, and yolies pivotally connected with said links and serving to lock said wall forming members in assembled position and to disassemble said members when actuated by said disassembling frame.

6. The combination of a mold consisting of a frame and wall forming members hinged thereto and provided with guide standards mounted on said frame and a core, and a truck for transporting said mold provided with a disassenil'iling frame pivotally mounted on said truck, a lifting bar carried by said frame and guided by said standards, a hanger suspended on said lifting bar and carrying said core, links pivotally connected to said lifting bar, and yokes pivotally connected with said links and serving to lock said wall forming members in assembled position and to disassemble said members when. actuated by said disassembling frame.

111 testimony whereof, I set my hand in the presence of two witnesses, this 14th day of September, 1907.

DAV D V. SMlTl'l.

Witnesses:

A. L. JACKSON, J. W. STIT'r. 

